Realize column factory

[Tigrov]

Q	A
Is bugfix?	❌
New feature?	✔️
Breaks BC?	✔️
Fixed issues	yiisoft/db#854

[codecov]

Codecov Report

Attention: Patch coverage is 96.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 99.51%. Comparing base (03a6340) to head (e68661a).
Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
src/Column/ColumnFactory.php	95.65%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #355      +/-   ##
============================================
+ Coverage     98.80%   99.51%   +0.70%     
+ Complexity      288      286       -2     
============================================
  Files            25       26       +1     
  Lines           839      822      -17     
============================================
- Hits            829      818      -11     
+ Misses           10        4       -6     

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